EP3186506B1 - Dispositif et procédé de stockage d'énergie - Google Patents

Dispositif et procédé de stockage d'énergie Download PDF

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Publication number
EP3186506B1
EP3186506B1 EP15766797.3A EP15766797A EP3186506B1 EP 3186506 B1 EP3186506 B1 EP 3186506B1 EP 15766797 A EP15766797 A EP 15766797A EP 3186506 B1 EP3186506 B1 EP 3186506B1
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EP
European Patent Office
Prior art keywords
heat
medium
chamber
vessel
degrees celsius
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP15766797.3A
Other languages
German (de)
English (en)
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EP3186506A1 (fr
Inventor
Alexander Tremel
Uwe Lenk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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Filing date
Publication date
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Publication of EP3186506A1 publication Critical patent/EP3186506A1/fr
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Publication of EP3186506B1 publication Critical patent/EP3186506B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/005—Installations wherein the liquid circulates in a closed loop ; Alleged perpetua mobilia of this or similar kind
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G4/00—Devices for producing mechanical power from geothermal energy
    • F03G4/063—Devices for producing mechanical power from geothermal energy with energy storage devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/061—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element
    • F03G7/06112—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element using the thermal expansion or contraction of enclosed fluids
    • F03G7/06113—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element using the thermal expansion or contraction of enclosed fluids the fluids subjected to phase change
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/42—Storage of energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

Definitions

  • the invention relates to a device and a method for storing energy, in particular electric current.
  • the storage of electric current by batteries is usually limited to a power range of less than a few megawatts. This is due to the specific size of batteries, but above all to the specific investment costs, which are very high.
  • the storage of energy, in particular electricity, for example, by pumped storage power plants and so-called power-to-gas applications can be realized.
  • Pumped storage power plants are limited in their application due to geographical and ecological boundary conditions. In addition, their construction requires a great deal of investment.
  • the power-to-gas technology is suitable for long-term storage, but has not yet reached sufficient development maturity.
  • compressed air storage power plants are in development, which can also be applied in a wide power range. However, such compressed air storage plants are also geographically bound and have only a medium power storage efficiency. In addition, even such compressed air storage power plants have not reached a sufficient development maturity.
  • a first aspect of the invention relates to a device for storing energy, in particular electric current, with at least one first container, which has a first receiving space.
  • the apparatus further comprises a separator arranged in the first container, by which the first receiving space is divided into a first chamber for receiving a first medium and a second chamber for receiving a gas phase.
  • the separator is movable with simultaneous change in volume of the chambers relative to the first container. In other words, that moves Separating device in the first container relative to this, so this is accompanied by a simultaneous change in volume of the chambers.
  • the volume change of the first chamber is reciprocal to the volume change of the second chamber.
  • volume reduction of the first chamber is accompanied by an increase in volume of the second chamber and vice versa.
  • the volume of the chamber changes to the same extent. This means that, for example, the volume of the first chamber decreases to the same extent as the volume of the second chamber increases, and vice versa.
  • the apparatus further comprises at least one second container, which has a second receiving space connected to the second chamber, the contents of which are in mass transfer, in particular in thermodynamic equilibrium with the gas phase.
  • the device comprises a tempering device, by means of which heat or heat energy can be supplied to the second container and can be discharged from the second container.
  • the device comprises at least one conveying device, by means of which the medium with a predeterminable pressure in the first chamber with simultaneous, effected by means of the temperature control device heat dissipation from the second container is conveyed.
  • the medium is conveyed by means of the conveying device into the first chamber at a predeterminable pressure, heat being simultaneously removed by the tempering device from the second container and in particular from its contents.
  • the device comprises at least one expansion device which can be driven by the medium received under pressure in the first chamber with simultaneous heat input caused by the tempering device into the second container.
  • the medium taken up or stored under pressure in the first container, in particular the first chamber is removed from the first chamber and fed to the expansion device, which is driven by means of the medium, wherein at the same time heat or heat energy is supplied to the second container and in particular its content by means of the temperature control device.
  • energy which is expended for driving the delivery device and thus for conveying the medium into the first chamber in particular in at least one other form of energy, can be stored, stored or stored in a particularly efficient and effective manner, since the delivery device is at least substantially constant Promotes back pressure in the first container.
  • the energy for driving the conveying device is, in particular, mechanical or electrical energy or electric current, which can be stored or temporarily stored particularly efficiently and effectively by means of the device.
  • the cached energy can be stored out particularly effectively and efficiently, that is, removed from the device.
  • the expansion device is driven by means of the medium, so that, for example, can be provided and used by the expansion device as a result of their driving energy, in particular in the form of mechanical energy.
  • the heat supplied during the driving of the expansion device and thus during the Aus Grandens the energy a high pressure in both containers can be realized.
  • even more energy, in particular electrical energy can be stored out than was previously stored if the heat energy supplied is not taken into account.
  • a heat exchanger disposed upstream of the first chamber for effecting heat exchange between the medium and the contents of the second container.
  • a particularly effective and efficient energy storage can be realized. This is particularly advantageous when cold water or a cold liquid is used as the medium.
  • the medium is a liquid, in particular water, or a gas, in particular air.
  • the content of the second container is a liquid or a solid.
  • the liquid received in the second container may be the same substance or mixture as the gas phase in the second chamber.
  • thermodynamic phase equilibrium in the two-phase region.
  • a solution equilibrium between a liquid as the content and the gas phase is possible, or between both is a chemical reaction in equilibrium.
  • a first example of such an equilibrium is, for example, the phase equilibrium between a gaseous phase, that is, the gas phase in the second chamber and a liquid phase in the second container, wherein, for example, ammonia or a refrigerant are used as pure substance in the two-phase region.
  • a second example of equilibrium is a solution balance between a gas phase and a liquid, such as a solution of carbon dioxide (CO 2 ) or ammonia in water.
  • a third example for a balance is a chemical equilibrium between a gas phase and a solid. This may be, for example, a reversible reaction between copper carbonate (CuCO 3 ) and copper oxide (CuO). This reversible reaction is shown below: CuO + CO 2 ⁇ -> CuCO 3
  • a stirrer by means of which, for example, the liquid is stirred as the content, a brisk exchange, that is mass transfer between the content or the liquid and the gas phase to be ensured.
  • a further embodiment is characterized in that the conveying device comprises at least one compressor for compressing the medium, in particular as a gas, in particular air. This allows energy to be stored very efficiently, quickly and effectively.
  • At least one heat store is provided, in which heat can be stored from the medium heated by the compression.
  • the medium is a gas such as air
  • the air is heated by the compression effected by the compressor.
  • At least some of the heat contained in the compressed air can be dissipated by the compressed air, so that a particularly high degree of compression of the air can be realized.
  • the heat dissipated by the compressed air can be stored in the heat accumulator and used for other purposes, for example when driving the expander.
  • the device comprises a drivable by the expansion device generator, by means of which by driving the generator electrical energy is provided.
  • the device according to the invention is also suitable for particularly high power ranges and for long-term storage. This means that the device according to the invention enables cost-effective storage of energy, in particular electrical energy, on a large scale and with high efficiencies.
  • Heat which is supplied to the second container and thus its content in the context of the heat supply effected by means of the tempering device originates, for example, from a power plant or industrial process, in particular from a further medium of such a power plant or industrial process.
  • the heat is thus for example waste heat, which is contained in the further medium and can be used by means of the device according to the invention for the efficient and effective storage of energy.
  • a second aspect of the invention relates to a method for storing energy, in particular electrical energy, by means of a device, in particular a device according to the first aspect of the invention.
  • the device thus comprises at least one first container having a first receiving space and a separating device arranged in the first container, by means of which the first receiving space is subdivided into a first chamber for receiving a first medium and a second chamber for receiving a gas phase simultaneous volume change of the chambers is movable relative to the first container.
  • the device comprises at least one second container, which has a second receiving space connected to the second chamber, the content of which is in mass transfer (ideally in thermodynamic equilibrium) with the gas phase.
  • a tempering device provided by means of which heat energy can be supplied to the second container and discharged from the second container.
  • the device comprises at least one conveying device, by means of which the medium is conveyed to the first chamber with a predeterminable pressure, wherein at the same time heat dissipation from the second container is effected by means of the tempering device.
  • at least one expansion device is provided, which is driven by the medium received in the first chamber under pressure, wherein at the same time by means of the tempering device, a heat supply is effected in the second container.
  • the device can be operated at particularly low operating temperatures, so that inexpensive standard components can be used.
  • storage costs for storing the energy can be kept low. In other words, it is thereby possible to avoid the use of particularly temperature-resistant and therefore cost-intensive materials.
  • heat is transferred from another medium via the temperature control into the second container, in particular its content, wherein the further medium a temperature of less than 200 degrees Celsius, in particular less than 140 degrees Celsius, and preferably less than 100 degrees Celsius.
  • the example designed as a pressure vessel container only with cold media are filled, which preferably have a temperature of less than 140 degrees Celsius, preferably less than 100 degrees Celsius. This allows the use of particularly cost-effective materials and pressure vessel concepts, such that the containers may be plastic-based containers or concrete-based underground containers, for example.
  • Another embodiment is characterized in that in the heat supply, the heat from a power plant, an industrial process or a natural heat source, for example geothermal and / or solar thermal energy is provided. This makes it possible to realize a particularly efficient method. Finally, it has proven to be particularly advantageous if the medium is provided directly from a power plant or an industrial process and returned there again.
  • FIG. 1 shows in a schematic representation of a generally designated 10 device according to a first embodiment for storing energy present in the form of electrical energy.
  • the device 10 comprises at least one first container 12, which has a designated as a whole 14 first receiving space.
  • the apparatus 10 may readily include a plurality of first containers having respective first receiving spaces. In this case, the plurality of containers may be connected in parallel or in series with each other.
  • the first container 12 is a first pressure container, since in the first container 12 a medium is stored under pressure, as will be explained below.
  • the device 10 comprises a separating device 16, which is arranged in the first receiving space 14 and is movable relative to the first container 12. As in FIG. 1 is illustrated by a double arrow 18, the separator 16 is translatable relative to the first container 12, that is displaceable.
  • the first receiving space 14 is divided into a first chamber 20 and a second chamber 22.
  • the aforementioned medium is received or receivable, wherein the medium in the first embodiment is a liquid, for example in the form of liquid water.
  • a gas phase is added.
  • the separator 16 is easily displaced or movable, so that on both sides, that is, in both chambers 20 and 22, the same pressure prevails.
  • the chambers 20 and 22 are separated or sealed from each other by means of the separator 16, so that a mass transfer between the chambers 20 and 22 is not or only to a very limited extent possible.
  • the separating device 16 can be designed in various ways. It is possible, for example, the use of a displaceable surface as a piston, as in FIG. 1 is indicated. In other words, the separating device 16 may be a piston, which is displaceable relative to the first container 12. Alternatively, the separating device 16 may be formed as an elastic bladder, in particular elastic polymer bladder, which inflates or inflates, for example, similar to a balloon when a volume, in particular gas volume, increases in its interior. In this embodiment, for example, then there is no sealing surface, and a particularly good tightness between the medium or the water and the gas phase can be realized. Alternatively, the use of a non-elastic or rigid material is possible. In this case, a structure of the non-elastic material is then introduced, for example in the first container 12, and this structure can, for example, fold together when the water in the first container 12, in particular the first chamber 20, is conveyed or pumped.
  • FIG. 1 is particularly well recognizable that the separator 16 is movable relative to the first container 12 with simultaneous change in volume of the chambers 20 and 22 and displaceable. This means that with a move the separating device 16 relative to the first container 12, for example, a reduction in volume of the first chamber 20 and at the same time an increase in volume of the second chamber 22 go along. The volume of the first chamber 20 is reduced to the same extent as the volume of the second chamber 22 is increased and vice versa.
  • the device 10 further comprises at least one second container 24, which is also designed as a pressure vessel.
  • the second container 22 has a second receiving space 26, which is fluidically connected to the second chamber 22 via at least one line 28.
  • a content 30 of the receiving space 26 in the mass transfer, in particular in the ideal case at any time in thermodynamic equilibrium, with the gas phase located in the second chamber 22.
  • the content 30 may be a liquid or a solid that is in thermodynamic equilibrium with the gas phase in the second chamber 22.
  • the liquid may be the same substance or the same substance mixture as the gas phase, for example a thermodynamic phase equilibrium in the two-phase region.
  • a solution equilibrium between the content 30 in the form of a liquid and the gas phase is possible, or between the gas phase and the content 30 is a chemical reaction in equilibrium.
  • the device 10 further comprises a tempering device 32, by means of which heat energy can be supplied to the second container 24 and thus its contents 30 and from the second container 24 or its contents 30 can be discharged.
  • the temperature control device 32 is a device for supplying heat to the second container 24 and for heat removal from the second container 24.
  • a heat exchanger 34 which is also referred to as a heat exchanger.
  • At least one conveying device 36 is provided with a pump 38, by means of which the medium in the form of water with a predeterminable pressure in the first chamber 20 can be conveyed.
  • the pump 38 is associated with a motor in the form of an electric motor 40, the rotor is connected via a shaft 42 to the pump 38.
  • the pump 38 can be driven by means of the electric motor 40.
  • the electric motor 40 is supplied with energy in the form of electrical energy or electric current, so that electrical power is expended in the first chamber 20 for conveying the water.
  • the conveyor 36, in particular the pump 38 via at least one line 44 fluidly connected to the first chamber 14, so that the water can be promoted by the pump 38 via the line 44 into the first chamber 20.
  • the apparatus 10 further includes at least one expander 46 with a turbine 48 or other engine.
  • the turbine 48 is arranged in a line 50, which is fluidically connected on the one hand to the turbine 48 and on the other hand to the first chamber 20. Via the line 50, the water stored under pressure in the first chamber 20 can be removed from the first chamber 20 and fed to the turbine 48, so that the turbine 48 can be driven or driven by the medium (water) received under pressure in the first chamber 20 becomes.
  • the turbine 48 By driving the turbine 48, this provides mechanical energy.
  • the turbine 48 is coupled to a shaft 52, via which the mechanical energy can be provided.
  • the device 10 further comprises an electric machine in the form of a generator 54 which is coupled to the shaft 52 and thereby driven by the turbine 48 and the mechanical power provided by the turbine 48.
  • the generator 54 can thus at least a portion of the shaft 52 provided by the turbine 48 mechanical energy into electrical Energy or electric power to be converted.
  • the pressure in the second container 24 or in the second receiving space 26 increases by influencing the equilibrium position in all variants.
  • the content 30 is a pure substance such as ammonia, for example, the evaporation of the pure substance takes place, and the pressure increases analogously to the vapor pressure curve of the pure substance.
  • water is pumped by means of the pump 38 into the first chamber 20.
  • heat is removed from the second container 24 via the heat exchanger 34 at at least substantially constant temperature, which then results in a condensation of the gas phase and its reduction in volume .
  • the pumping of the water and the simultaneous heat removal from the second container 24 cause the first container 12 to fill with water and the pressure in the first container 12 remains at least substantially the same.
  • the pump 38 promotes against a constant back pressure, which allows an at least substantially optimal design and high efficiency.
  • a first concept calculation was carried out with ammonia as the liquid or the medium. It can according to the Vapor pressure curve of ammonia water at about 10 bar in the first container 12 are pumped when heat at about 25 degrees Celsius at the heat exchanger 34 or by means of this is removed from the second container 24. If the first container 12 is now filled with water, the storage process is completed, and the system or device 10 is fully charged.
  • the heat exchanger 34 is at a high temperature of less than 200 degrees Celsius (° C), preferably less than 140 degrees Celsius (° C) and preferably less than 100 degrees Celsius ( ° C) heat supplied. This is done, for example, such that the heat exchanger 34, a further medium is supplied, the temperature is less than 200 degrees Celsius, preferably less than 140 degrees Celsius, and preferably less than 100 degrees Celsius.
  • the further medium originates, for example, from a power plant or industrial process and contains heat in the form of waste heat, which is used via the heat exchanger 34 or the tempering device 32 in the recovery of electrical current, that is to say when it is being stored. By this heat, the pressure in both containers 12 and 24 increases.
  • the supply of heat during the storage is possible from a variety of sources.
  • a variety of sources can be used, which provide waste heat that can be supplied via the heat exchanger 34 to the second container 24.
  • heat from the exhaust or steam cycle of power plants and industrial plants, geothermal heat, solar heat, heat from heating networks, heat of combustion or other sources can be used.
  • the incorporation or introduction or supply of heat into the second container 24 is possible by a variety of solutions.
  • heat exchanger surfaces, finned tubes, heat pipes, so-called heat pipes, etc. can be used.
  • waste heat at a temperature level of preferably less than 200 degrees Celsius (° C) is used in the Aus Grandevorgang. Waste heat in the temperature range of less than 200 degrees Celsius, preferably less than 100 degrees Celsius, accumulates in many power plant and industrial processes. This temperature level is usually too low to allow the use of heat. In some processes, a targeted heat dissipation in this temperature range is necessary because, for example, a process stream must be cooled. In general, waste heat of less than 100 degrees Celsius is available at various locations and can thus be used or used cost-effectively or free of charge.
  • FIG. 2 shows a second embodiment of the device 10.
  • a conduit 56 through which the medium can flow, via which the medium is supplied for example from a reservoir of the pump 38, is provided.
  • the second embodiment now differs in particular from the first embodiment in that a further heat exchanger 58 is arranged in the line 56, which is thus arranged in the flow direction of the medium upstream of the first chamber 20 and in this case upstream of the pump 38.
  • the further heat exchanger 58 serves to effect heat exchange between the medium flowing through the line 56 and the content 30 of the second container 24.
  • the second embodiment is particularly useful when cold water is used as the medium.
  • This water can then be used for heat exchange with the example formed as a liquid or solid content 30.
  • the electrical energy required to fill the first container 12, that is, the first chamber 20 can be kept particularly low with water.
  • hot or hot water can also be used as the medium.
  • the warm water used can absorb heat from a heat source prior to storage.
  • the storage of large amounts of hot water, whose temperature is preferably less than 140 degrees Celsius, is now carried out in district heating storage. These heat storage serve as a buffer in district heating networks, for example. This can also be done in the device 10.
  • the warm water is supplied to a heat exchanger after its expansion, so that the heat contained in the water can be removed from the water and used.
  • FIG. 3 shows the device 10 according to a third embodiment.
  • the medium no liquid but a gas in the form of air is used.
  • the medium is a storage medium that is used for storing and storing the electrical energy.
  • the conveyor 36 comprises two compressors 60 and 62 connected in series or serially by means of which the air is conveyed and compressed.
  • each of the compressors 60 and 62 is assigned a motor, in particular in the form of an electric motor, by means of which the respective compressor 60 or 62 is driven by the application of electrical energy or current.
  • FIG. 3 By compressing the air, it is heated. Between the compressors 60 and 62, which are also referred to as stages or compression stages, is an in FIG. 3 Cooling device, not shown, by means of which the air compressed by the compressor 60 and thereby heated air downstream of the compressor 60 and upstream of the compressor 62 is cooled. As a result of this cooling, at least part of an amount of heat contained in the air is removed from the air, which is in FIG. 3 is illustrated by a directional arrow 64. The heat removed by means of the cooling device from the air heat is supplied to a heat storage 66 and stored in this. Overall is off FIG. 3 recognizable that in the third embodiment, a multi-stage compression of the air is provided.
  • heat is dissipated by the compressed air, so that the air is cooled.
  • the heat is removed at a temperature level of less than 200 degrees Celsius.
  • the expansion device 46 includes the turbine 48 and a further turbine 68, which is arranged in series with the turbine 48.
  • the turbines 48 and 68 are coupled to each other via the shaft 52, so that the generator 54 can be driven by the turbines 48 and 68.
  • a directional arrow 70 is illustrated that the air downstream of the first container 12 and upstream of the turbine 48 at least a portion of the heat stored in the heat storage 66 heat is supplied.
  • a directional arrow 72 At least a portion of the heat stored in the heat storage 66 is supplied to the air between the turbines 48 and 68, thereby increasing power generation during exhaustion and excessively decreasing the temperature of the air during expansion to avoid.
  • the electrical storage efficiency is very high compared to conventional compressed air concepts due to the use of waste heat during withdrawal and can range from as much as 70 percent up to and including 80 percent.
  • the supply of heat which is indicated by the directional arrow 72, can also be done by the combustion of a regenerative or fossil fuel, for example natural gas.
  • gas phase and liquid or solid phase for example Two-phase of a pure substance or a mixture of substances, solution equilibrium of a gas and a liquid, chemical reaction between gas and liquid or Solid
  • the storage takes place against a constant accumulator pressure, so that always at least substantially optimal operation of the pump 38 and the compressor 60 and 62, that is, the conveyor 36, is possible.
  • the withdrawal also takes place from the pressure vessel in the form of the first container 12 at a constant pressure, which allows a high efficiency of power generation by the at least substantially optimal design of an engine to this pressure.
  • the system will be operated at low operating temperatures of less than 200 degrees Celsius in air and water to allow the use of low cost standard components. As a result, low storage costs can be realized.
  • the pressure vessels in the form of the containers 12 and 24 are filled only with relatively cold media having a temperature of less than 200 degrees Celsius, preferably less than 140 degrees Celsius and preferably less than 100 degrees Celsius, so that inexpensive materials and pressure vessel concepts can be used.

Claims (12)

  1. Installation (10) d'accumulation d'énergie, comprenant :
    - au moins une première cuve (12), ayant un premier espace (14) de réception,
    - un dispositif (16) de séparation, qui est disposé dans la première cuve (12) et par lequel le premier espace (14) de réception est subdivisé en une première chambre (20) de réception d'un premier milieu et en une deuxième chambre (22) de réception d'une phase gazeuse, le dispositif (16) de séparation étant mobile par rapport à la première cuve (12) avec modifications simultanées du volume des chambres (20, 22),
    - au moins une deuxième cuve (24), qui a une deuxième espace (26) de réception, qui communique avec la deuxième chambre (22) et dont le contenu est en échange de matière avec la phase gazeuse,
    l'installation (10) étant caractérisée par :
    - un dispositif (32) de mise en température, au moyen duquel de l'énergie calorifique peut être envoyée à la deuxième cuve (24) et peut être évacuée de la deuxième cuve (24),
    - au moins un dispositif (36) de transport, au moyen duquel le milieu peut, à une pression pouvant être donnée à l'avance, être transporté dans la première chambre (20) avec évacuation simultanée de la chaleur, provoquée au moyen du dispositif (32) de mise en température, de la deuxième cuve (24) et
    - au moins un dispositif (46) d'expansion, qui peut être entraîné par le milieu reçu sous pression dans la première chambre (20) avec apport simultané de la chaleur, provoquée au moyen du dispositif (32) de mise en température, à la deuxième cuve (24).
  2. Installation (10) suivant la revendication 1, caractérisée en ce que
    il est prévu un échangeur de chaleur (58), monté en amont de la première chambre (20), pour provoquer un échange de chaleur entre le milieu et le contenu (30) de la deuxième cuve (24).
  3. Installation (10) suivant l'une des revendications 1 ou 2,
    caractérisée en ce que
    le milieu est un liquide, notamment de l'eau, ou un gaz, notamment de l'air.
  4. Installation (10) suivant l'une des revendications précédentes,
    caractérisée en ce que
    le contenu (30) de la deuxième cuve (24) est un liquide ou un solide.
  5. Installation (10) suivant l'une des revendications précédentes,
    caractérisée en ce que
    le dispositif (36) de transport comprend au moins un compresseur (60, 62) pour comprimer le milieu.
  6. Installation (10) suivant la revendication 5,
    caractérisée en ce qu'
    il est prévu au moins un accumulateur (66) de chaleur, dans lequel peut être accumulée de la chaleur provenant du milieu échauffé par la compression.
  7. Installation (10) suivant l'une des revendications précédentes,
    caractérisée en ce qu'
    il est prévu une génératrice (54), qui peut être entraînée par le dispositif (46) d'expansion et au moyen de laquelle de l'énergie électrique peut être mise à disposition par entraînement de la génératrice (54).
  8. Procédé d'accumulation d'énergie au moyen d'une installation (10) suivant la revendication 1.
  9. Procédé suivant la revendication 8,
    caractérisé en ce que
    on effectue l'apport de chaleur à la deuxième cuve (24) à une température de moins de 200 degrés Celsius, notamment de moins de 140 degrés Celsius et, de préférence, de moins de 100 degrés Celsius.
  10. Procédé suivant la revendication 9,
    caractérisé en ce que
    lors de l'apport de chaleur, on transmet de la chaleur d'un autre milieu, par l'intermédiaire du dispositif (32) de mise en température, à la deuxième cuve (24), l'autre milieu ayant une température de moins de 200 degrés Celsius, notamment de moins de 140 degrés Celsius et, de préférence, de moins de 100 degrés Celsius.
  11. Procédé suivant l'une des revendications 8 à 10,
    caractérisé en ce que
    lors de l'apport de chaleur, on met à disposition de la chaleur d'une centrale électrique, d'un processus industriel ou d'une source de chaleur naturelle.
  12. Procédé suivant l'une des revendications 8 à 11,
    caractérisé en ce que
    l'on met à disposition le milieu directement à partir d'une centrale électrique ou d'un processus industriel et on l'y retourne.
EP15766797.3A 2014-09-29 2015-09-17 Dispositif et procédé de stockage d'énergie Not-in-force EP3186506B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014219678.7A DE102014219678A1 (de) 2014-09-29 2014-09-29 Vorrichtung und Verfahren zum Speichern von Energie
PCT/EP2015/071292 WO2016050524A1 (fr) 2014-09-29 2015-09-17 Dispositif et procede de stockage d'énergie

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EP3186506A1 EP3186506A1 (fr) 2017-07-05
EP3186506B1 true EP3186506B1 (fr) 2018-07-25

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EP (1) EP3186506B1 (fr)
CN (1) CN107002641A (fr)
AU (1) AU2015327243A1 (fr)
DE (1) DE102014219678A1 (fr)
WO (1) WO2016050524A1 (fr)

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DE102019003744A1 (de) * 2019-05-23 2020-11-26 Madalin Vinersar Vorrichtung und Verfahren zur Energieerzeugung, insbesondere zur Erzeugung von elektrischem Strom
US11199114B2 (en) * 2019-08-21 2021-12-14 Taiwan Happy Energy Co., Ltd. Devices, systems, and methods for generating power
DE102020112724A1 (de) * 2020-05-11 2021-11-11 Johann Tauscher System zur Energiespeicherung und -rückgewinnung
CN114198242A (zh) * 2021-12-06 2022-03-18 西安交通大学 一种利用弹簧弹性势能的抽水蓄能系统及方法
WO2023229972A1 (fr) * 2022-05-24 2023-11-30 Power8 Tech Inc. Systèmes et procédés de stockage et de conversion d'énergie géothermique

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Publication number Publication date
CN107002641A (zh) 2017-08-01
AU2015327243A1 (en) 2017-05-04
DE102014219678A1 (de) 2016-03-31
US20170264164A1 (en) 2017-09-14
EP3186506A1 (fr) 2017-07-05
WO2016050524A1 (fr) 2016-04-07

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